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Author
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Topic: Internal Balance Debocle
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SundanceKid
Gearhead Posts: 1269
From: UT
Registered: Feb 2001
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posted 10-15-2004 04:43 PM
   
I have an Eagle 347 rotating assembly that I am soon going to have balanced. I also have an expensive aluminum hub harmonic balancer that is zero balanced. Would it be worth the expense and effort to internaly balance the engine or spend another 300.00 on a new balancer? What would be the best performance vrs. cost? Are there any other options I'm missing?
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 10-15-2004 05:00 PM
There is no balance better than an internal zero method.
Revs quicker, easier on all parts, lasts longer.
No down side.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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SundanceKid
Gearhead Posts: 1269
From: UT
Registered: Feb 2001
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posted 10-15-2004 10:49 PM
Thanks Alex. That was my original thought, then visions of 90lbs of mallory in my crank caused me to second guess myself.Thanks for all the help with all the major decisions I've made over the years too.
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mizry
Journeyman Posts: 56
From: ca
Registered: Sep 2004
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posted 10-16-2004 02:47 AM
Im goin through the same desicion as you. What Ive been thinkin of is just getting the new eagle crank designed for internal balancing without mallory and sell the other crank to cover most the cost.
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Fordwiser
Gearhead Posts: 408
From: Metamora, Illinois
Registered: Dec 2000
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posted 10-17-2004 09:21 PM
Is it a vibration dampner or just a aluminum hub. Internally balanced is best, but if you are using just a liteweight solid hub it can be real hard on the crankshaft.
Roger
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SundanceKid
Gearhead Posts: 1269
From: UT
Registered: Feb 2001
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posted 10-18-2004 02:47 PM
The harmonic damper has an aluminum hub with a steel outer ring. The total weight of the unit is approx 8 lbs. I also plan to use an aluminum flywheel and not go over 6500? I figure with the low bob weight and the aluminum gear the engine should rev pretty quick.
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